JPH04222012A - Input device for data processor - Google Patents

Abstract

PURPOSE:To input signals from respective input apparatuses by means of input ports less than the number of input apparatuses to be connected. CONSTITUTION:Plural input apparatuses K11 to Kmn are divided into m groups each of which consists of n apparatuses in order to input signals from the mXn input apparatuses, n input apparatuses in each group are connected in common and connected to respective input ports T1 to Tn, and while scanning respective groups, a scanning signal from any one of the groups is inputted as a BCD code signal.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device for a data processing device such as a computer sequencer, which inputs data from a plurality of input devices.

0002

2. Description of the Related Art An input device for a computer sequencer takes in signals from a plurality of input devices (push buttons, sensors, etc.). Conventionally, as shown in FIG. 2, P input devices K1, K2, ..., Kp are connected to one end of P input ports T1, T2, ..., Tp, and signals from input devices K1, K2, ..., Kp are input in parallel.

0003

The conventional computer sequencer input device described above is provided with the same number of input ports as the input devices to be connected, and there are 100 input ports (P=
When connecting 100) input devices, 100 input ports are required, which poses a problem of increasing the cost of the input device.

The present invention has been made in view of the above problem, and is an input device for a data processing device that can receive signals from each input device with a small number of input ports relative to the number of connected input devices. The purpose is to provide equipment.

[0005]

[Means for Solving the Problems] An input device for a data processing apparatus according to the present invention divides input devices into m groups of n devices, and connects one end of each of the input devices 1 to n in each group to m groups. Connects commonly to n individual input ports of corresponding data processing devices, and outputs m scanning terminals that individually output time-sequential scanning signals, and outputs a code to indicate which scanning signal is being output. a scanning unit having a plurality of output bit ports for each of said groups 1 to n;
The other ends of the input devices up to are connected in common, respectively connected to the scanning terminal, and connected to the data processing device,
The apparatus is characterized in that it includes a plurality of input bit ports that receive code signals from a plurality of output bit ports of the scanning unit, and the input device is specified by signals from the individual input ports and the input bit ports.

[0006]

[Operation] In the input device of this data processing device, signals from each of the input devices 1 to n in each group are respectively input to individual input ports of the data processing device. Then, which group of input devices the signal input to each individual input port comes from is selected by sequentially selecting the scanning terminals, and a code signal indicating which scanning terminal is being selected is selected. from the bit port of the scanning unit to the input bit port of the data processing device. Based on this code signal, it is possible to specify which group each input device corresponds to the signal input to the individual input port. With this input device,
Even when connecting P=m×n input devices, n+g(
The number of ports (the number of bits of the code signal) is sufficient.

[0007]

[Examples] The present invention will be explained in more detail with reference to Examples below. FIG. 1 is a circuit connection diagram of an input device for a computer sequencer showing an embodiment of the present invention. In the figure, the computer sequencer 1 has m×n input devices K11, K12, ..., K1n to Km1, K
Input devices m2, . . . , Kmn are connected. The n×m input devices are divided into m groups, each group consisting of n input devices, and each group's input devices have input devices from 1 to m corresponding to each other. and are connected to the input ports T1, T2, . . . , Tn of the computer sequencer 1, respectively. Further, the other ends of the input devices of each group are commonly connected via a diode d in each group, and are connected to scanning terminals S1, S2, and S2 of the input scanning unit 2.
..., connected to Sm. In other words, the input devices K11, ..., K1n of the first group have their other ends commonly connected to the scanning terminal S1, and the input devices K21, ..., K2n of the second group have their other ends connected to the scanning terminal S1 through the diode d. The input devices Km1, ..., Kmn of the m-th group connected to the terminal S2 are similarly connected to the scanning terminal Sm through the diode d.
It is connected to the. Each of the scanning terminals S1, S2,..., Sm of the input scanning unit 2 receives a scanning signal that is time-divisionally scanned by the transistors Q1, Q2,..., Qm, and sequentially scans the scanning terminals S1, S2,..., Sm is configured to be connected to ground. In addition, a signal indicating which scanning terminal is connected is output as a BCD code output from ports B1, B2, B3, and B4 of the input scanning unit 2, and this B
The CD code, that is, the signal indicating which terminal is being scanned, is sent to B of computer sequencer 1.
CD code input ports b1, b2, b3, b4
is configured to be input.

[0008] As described above, the computer configured
In the input device of the sequencer 1, when the transistor Q1 of the input scanning unit 2 is turned on and the scanning terminal S1 is grounded, that is, when the scanning terminal S1 is selected, the computer sequencer 1
The signals from the input ports T1, T2, ..., Tn are energized according to the on/off status of the input devices K11, K12, ..., K1n, and the sequencer 1 of the computer receives the signals through the input ports T1, T2, ..., Tn. Then, on/off signals of the input devices K11, K12, . . . , K1n are taken in. In the state where the scanning terminal S1 is selected, the other transistors Q2,...,Qm are in the off state, and therefore the scanning terminal S2,...,S
m is not selected. In this case, a signal indicating that the scanning terminal S1 is selected from the BCD code output ports B1, . . . , B4 is input to the BCD code input ports b1, . . . , b4 of the computer sequencer 1. Therefore, the computer sequencer 1 recognizes that the scanning terminal S1 is selected by the code signal taken in from this BCD code input, and outputs the on/off signals taken in from the input ports T1, T2, ..., Tn. is input device K11,
It is specified that the signal is from K12, . . . , K1n.

Next, when the scanning signal of the input scanning unit 2 moves and the transistor Q2 is turned on, the scanning terminal S2 is grounded and the input ports T1, T2, T2 of the computer sequencer 1 are connected to the ground.
..., Tn sends an energizing signal to the scanning terminal S according to the on/off status of the input devices K21, K22, ..., K2n.
2, and on/off signals of K21, K22, . . . , K2n are taken in from input ports T1, T2, . . . , Tn. In this case, similarly to the above, a signal indicating that the scanning terminal S2 has been selected as a BCD code output is input from the input scanning unit 2 as a BCD code input to the computer sequencer 1, so the input ports T1 and T2 are ,...,Tn
The signals taken in from the input devices K21, K22,...
It can be identified that this is an on/off signal from K2n.

When the scanning signal is applied to the transistor Qm as described above, the scanning terminal S
m is grounded, in this case input port T1
, T2 ,..., Tn to input devices Km1,..., Kmn
An energizing signal flows according to the on/off status of the input devices Km1, Tn from the input ports T1, T2,..., Tn.
Read signals corresponding to on/off of Km2, . . . , Kmn. And this read on/off signal is BCD
As a code output, a signal indicating that the scanning signal Sm is selected is similarly taken in as a BCD code input of the computer sequencer 1, so the on/off signal is also taken in from the input ports T1, T2,...,Tn. can be identified as on/off signals from the input devices Km1, . . . , Kmn.

According to the computer sequencer 1 of this embodiment, m×n input devices can be connected using only n input ports and a plurality of terminals required for the BCD code input terminal. For example, if there are m x n = 100 input devices, when grouped into 10 x 10, there are 10 input ports, and a BCD code for selecting and specifying the scanning terminals of these 10 input ports. The number of bits can be handled by a total of 14 input ports with 4 bits.

0012

According to the present invention, in order to connect n×m input devices, it is only necessary to have n IO ports and n bit ports for encoding. This has the advantage that the number of input ports can be far smaller than the number of devices, and the input device can be manufactured at a very low cost.

[Brief explanation of the drawing]

FIG. 1 is a circuit connection diagram of an input device for a computer sequencer showing an embodiment of the present invention.

FIG. 2 is a circuit connection diagram showing an input device of a conventional computer sequencer.

[Explanation of symbols]

1 Computer sequencer 2 Input scanning unit K11...K1n K21...K2n...Km1
・…・Kmn Input device T1 ・T2 ・…・Tn Input port b1 ・b
2 ・b3 ・b4 BCD code bit input port

Claims (1)

[Claims] 1. An input device for a data processing device for inputting signals from m×n (m, n: integer) input devices to the data processing device, wherein the input devices are input to each of n input devices. m
divided into groups, and one end of each of the corresponding input devices from 1 to n of each group is commonly connected and connected to n individual input ports of the corresponding data processing device, while time-sequential scanning signals are transmitted. A scanning unit is provided, which has m scanning terminals that individually output signals, and a plurality of bit ports that output a code indicating which scanning signal is being output, and the other end of each input device from 1 to n in each group. are commonly connected for each group and individually connected to the scanning terminal, the data processing device is provided with a plurality of input bit ports receiving code signals from the plurality of output bit ports of the scanning unit, and the individual input An input device for a data processing device, characterized in that an input device is specified by a signal from a port and the input bit port.